Question about Kohler 12 kW Emergency Power System - 12RES-L

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When I try to start my generator the code oc comes

When I try to start my kohler 12 res generator the code oc comes up. It will not turn over at all. I checked the battery and made sure it was putting out 12 volts. Checked the starter for any loose wires and did not find any. Any suggestions?

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  • 37 Answers

Check battery volatge while you are cranking engine if voltage drops below 9 vdc you have a bad battery. If it doesn't you probable have a bad starting solenoid or a bad ground at the starting solenoid.

Posted on Nov 18, 2009

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OC stands for Over Crank. How long does it take before the genset starts?

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